ALSA: pcm: Make snd_pcm_hw_constraints_init() and _complete() static

Both snd_pcm_hw_constraints_init() and _complete() functions are
called only from pcm_native.c, hence they can be static for further
optimization.

Link: https://lore.kernel.org/r/20200116162825.24792-1-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/pcm_local.h

@@ -20,9 +20,6 @@ void snd_interval_muldivk(const struct snd_interval *a,
 void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k,
 			  const struct snd_interval *b, struct snd_interval *c);
 
-int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream);
-int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream);
-
 int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime,
 			       snd_pcm_hw_param_t var, u_int32_t mask);
 

sound/core/pcm_native.c

@@ -2308,7 +2308,7 @@ static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params,
 	return snd_interval_refine(hw_param_interval(params, rule->var), &t);
 }		
 
-int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream)
+static int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints;
@@ -2432,7 +2432,7 @@ int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream)
 	return 0;
 }
 
-int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream)
+static int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct snd_pcm_hardware *hw = &runtime->hw;